Photographer, blogger, and photographers rights’ activist Carlos Miller has made headlines quite a few times over the past few years with his legal rumbles with authorities over photography in public places. Miller, who often instigates the disputes for the purpose of bringing photographers’ rights into the spotlight, recently had another big confrontation with authorities in Miami (it’s not the first time it has happened).

The video above is Miller’s documentation of the incident. He says he was “attacked, choked, suffocated and handcuffed by 50 State security guards” for shooting photos and video on the Miami-Dade Metro rail this past Sunday night.